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- Title
Low Serum Vitamin D Status Is Associated with Incident Alzheimer's Dementia in the Oldest Old.
- Authors
Melo van Lent, Debora; Egert, Sarah; Wolfsgruber, Steffen; Kleineidam, Luca; Weinhold, Leonie; Wagner-Thelen, Holger; Stoffel-Wagner, Birgit; Bickel, Horst; Wiese, Birgitt; Weyerer, Siegfried; Pentzek, Michael; Jessen, Frank; Schmid, Matthias; Maier, Wolfgang; Scherer, Martin; Riedel-Heller, Steffi G.; Ramirez, Alfredo; Wagner, Michael
- Abstract
Background. Vitamins A, D and E and beta-carotene may have a protective function for cognitive health, due to their antioxidant capacities. Methods. We analyzed data from 1334 non-demented participants (mean age 84 years) from the AgeCoDe study, a prospective multicenter-cohort of elderly general-practitioner patients in Germany, of whom n = 250 developed all-cause dementia and n = 209 developed Alzheimer's dementia (AD) during 7 years of follow-up. We examined whether concentrations of vitamins A (retinol), D (25-hydroxycholecalciferol) and E (alpha-tocopherol) and beta-carotene, would be associated with incident (AD) dementia. Results. In our sample, 33.7% had optimum vitamin D concentrations (≥50 nmol/L). Higher concentrations of vitamin D were associated with lower incidence of all-cause dementia and AD (HR 0.99 (95%CI 0.98; 0.99); HR0.99 (95%CI 0.98; 0.99), respectively). In particular, subjects with vitamin D deficiency (25.3%, <25 nmol/L) were at increased risk for all-cause dementia and AD (HR1.91 (95%CI 1.30; 2.81); HR2.28 (95%CI 1.47; 3.53), respectively). Vitamins A and E and beta-carotene were unrelated to (AD) dementia. Conclusions. Vitamin D deficiency increased the risk to develop (AD) dementia. Our study supports the advice for monitoring vitamin D status in the elderly and vitamin D supplementation in those with vitamin D deficiency. We observed no relationships between the other vitamins with incident (AD) dementia, which is in line with previous observational studies.
- Subjects
GERMANY; ALZHEIMER'S disease risk factors; RESEARCH; ALZHEIMER'S disease; CONFIDENCE intervals; VITAMIN E; DISEASE incidence; VITAMIN D; RISK assessment; DESCRIPTIVE statistics; VITAMIN A; RESEARCH funding; VITAMIN D deficiency; LONGITUDINAL method; DISEASE complications
- Publication
Nutrients, 2023, Vol 15, Issue 1, p61
- ISSN
2072-6643
- Publication type
Article
- DOI
10.3390/nu15010061